I purchased Eli's Aquifers from Brushy Mountain. They consist of plastic rectangular buckets with a detachable rim, little brightly colored styrofoam islands and a tiny-holed white mesh overlay. The styrofoam islands hold up the mesh allowing the bees to walk on it and drink. We purchased three of them (they're fairly inexpensive) and had them in place before our neighbors opened their pool (!!) and when we installed the packages. Here are some pictures: http://www.annzoid.com/images/forums/aquifer1.jpg http://www.annzoid.com/images/forums/aquifer2.jpg So far so good! Ann Hanson, MA -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---